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============================================================================== | ||
Using the Simple DirectMedia Layer with Qtopia/OPIE | ||
============================================================================== | ||
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============================================================================== | ||
I. Setting up the Qtopia development environment. | ||
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This document will not explain how to setup the Qtopia development | ||
environment. That is outside the scope of the document. You can read | ||
more on this subject in this excellent howto: | ||
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http://www.zauruszone.com/howtos/linux_compiler_setup_howto.html | ||
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============================================================================== | ||
II. Building the Simple DirectMedia Layer libraries using the arm | ||
cross-compiler | ||
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This is somewhat tricky since the name of the compiler binaries | ||
differ from the standard. Also you should disable features not | ||
needed. The command below works for me. Note that it's all one | ||
line. You can also set the NM, LD etc environment variables | ||
separately. | ||
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NM=arm-linux-nm LD=arm-linux-ld CC=arm-linux-gcc CXX=arm-linux-g++ RANLIB=arm-linux-ranlib AR=arm-linux-ar ./configure --enable-video-qtopia --disable-video-dummy --disable-video-fbcon --disable-video-dga --disable-arts --disable-esd --disable-alsa --disable-cdrom --disable-video-x11 --disable-nasm --prefix=/opt/Qtopia/sharp/ arm-unknown-linux-gnu | ||
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One thing to note is that the above configure will include joystick | ||
support, even though you can't have joysticks on the Zaurus. The | ||
reason for this is to avoid link / compile / runtime errors with | ||
applications that have joystick support. | ||
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============================================================================== | ||
III. Building the Simple DirectMedia Layer test programs: | ||
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After installing, making sure the correct sdl-config is in your | ||
path, run configure like this: | ||
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NM=arm-linux-nm LD=arm-linux-ld CC=arm-linux-gcc CXX=arm-linux-g++ AR=arm-linux-ar ./configure arm-unknown-linux-gnu | ||
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============================================================================== | ||
IV. Application porting notes | ||
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One thing I have noticed is that applications sometimes don't exit | ||
correctly. Their icon remains in the taskbar and they tend to | ||
relaunch themselves automatically. I believe this problem doesn't | ||
occur if you exit your application using the exit() method. However, | ||
if you end main() with 'return 0;' or so, this seems to happen. | ||
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Also note that when running in landscape mode - i.e requesting a | ||
window that is HEIGHT pixels wide and WIDTH pixels high, where WIDTH | ||
and HEIGHT normally is 240 and 320 - the image is blitted so that | ||
the hardware buttons are on the left side of the display. This might | ||
not always be desirable but such is the code today. | ||
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============================================================================== | ||
V. Enjoy! :) | ||
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If you have a project you'd like me to know about, or want to ask questions, | ||
go ahead and join the SDL developer's mailing list by sending e-mail to: | ||
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sdl-request@libsdl.org | ||
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and put "subscribe" into the subject of the message. Or alternatively you | ||
can use the web interface: | ||
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http://www.libsdl.org/mailman/listinfo/sdl | ||
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============================================================================== | ||
VI. What is supported: | ||
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Keyboard (Sharp Zaurus) | ||
Hardware buttons | ||
Stylus input (mouse) | ||
Video. Allows fullscreen both in portrait mode (up to WIDTHxHEIGHT | ||
size window) and in landscape mode (up to HEIGHTxWIDTH). | ||
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All other SDL functionality works like a normal Linux system (threads, | ||
audio etc). | ||
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-- | ||
David Hedbor <david@hedbor.org> | ||
http://david.hedbor.org/ http://eongames.com/ | ||
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